/**
 * @license
 * Copyright (C) 2017 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import '../../../styles/gr-table-styles.js';
import '../../../styles/shared-styles.js';
import '../../shared/gr-dialog/gr-dialog.js';
import '../../shared/gr-list-view/gr-list-view.js';
import '../../shared/gr-overlay/gr-overlay.js';
import '../../shared/gr-rest-api-interface/gr-rest-api-interface.js';
import '../gr-create-repo-dialog/gr-create-repo-dialog.js';
import {mixinBehaviors} from '@polymer/polymer/lib/legacy/class.js';
import {GestureEventListeners} from '@polymer/polymer/lib/mixins/gesture-event-listeners.js';
import {LegacyElementMixin} from '@polymer/polymer/lib/legacy/legacy-element-mixin.js';
import {PolymerElement} from '@polymer/polymer/polymer-element.js';
import {htmlTemplate} from './gr-repo-list_html.js';
import {ListViewBehavior} from '../../../behaviors/gr-list-view-behavior/gr-list-view-behavior.js';
import {GerritNav} from '../../core/gr-navigation/gr-navigation.js';

/**
 * @appliesMixin ListViewMixin
 * @extends PolymerElement
 */
class GrRepoList extends mixinBehaviors( [
  ListViewBehavior,
], GestureEventListeners(
    LegacyElementMixin(
        PolymerElement))) {
  static get template() { return htmlTemplate; }

  static get is() { return 'gr-repo-list'; }

  static get properties() {
    return {
    /**
     * URL params passed from the router.
     */
      params: {
        type: Object,
        observer: '_paramsChanged',
      },

      /**
       * Offset of currently visible query results.
       */
      _offset: Number,
      _path: {
        type: String,
        readOnly: true,
        value: '/admin/repos',
      },
      _hasNewRepoName: Boolean,
      _createNewCapability: {
        type: Boolean,
        value: false,
      },
      _repos: Array,

      /**
       * Because  we request one more than the projectsPerPage, _shownProjects
       * maybe one less than _projects.
       * */
      _shownRepos: {
        type: Array,
        computed: 'computeShownItems(_repos)',
      },

      _reposPerPage: {
        type: Number,
        value: 25,
      },

      _loading: {
        type: Boolean,
        value: true,
      },
      _filter: {
        type: String,
        value: '',
      },
    };
  }

  /** @override */
  attached() {
    super.attached();
    this._getCreateRepoCapability();
    this.dispatchEvent(new CustomEvent('title-change', {
      detail: {title: 'Repos'},
      composed: true, bubbles: true,
    }));
    this._maybeOpenCreateOverlay(this.params);
  }

  _paramsChanged(params) {
    this._loading = true;
    this._filter = this.getFilterValue(params);
    this._offset = this.getOffsetValue(params);

    return this._getRepos(this._filter, this._reposPerPage,
        this._offset);
  }

  /**
   * Opens the create overlay if the route has a hash 'create'
   *
   * @param {!Object} params
   */
  _maybeOpenCreateOverlay(params) {
    if (params && params.openCreateModal) {
      this.$.createOverlay.open();
    }
  }

  _computeRepoUrl(name) {
    return this.getUrl(this._path + '/', name);
  }

  _computeChangesLink(name) {
    return GerritNav.getUrlForProjectChanges(name);
  }

  _getCreateRepoCapability() {
    return this.$.restAPI.getAccount().then(account => {
      if (!account) { return; }
      return this.$.restAPI.getAccountCapabilities(['createProject'])
          .then(capabilities => {
            if (capabilities.createProject) {
              this._createNewCapability = true;
            }
          });
    });
  }

  _getRepos(filter, reposPerPage, offset) {
    this._repos = [];
    return this.$.restAPI.getRepos(filter, reposPerPage, offset)
        .then(repos => {
          // Late response.
          if (filter !== this._filter || !repos) { return; }
          this._repos = repos;
          this._loading = false;
        });
  }

  _refreshReposList() {
    this.$.restAPI.invalidateReposCache();
    return this._getRepos(this._filter, this._reposPerPage,
        this._offset);
  }

  _handleCreateRepo() {
    this.$.createNewModal.handleCreateRepo().then(() => {
      this._refreshReposList();
    });
  }

  _handleCloseCreate() {
    this.$.createOverlay.close();
  }

  _handleCreateClicked() {
    this.$.createOverlay.open();
  }

  _readOnly(item) {
    return item.state === 'READ_ONLY' ? 'Y' : '';
  }

  _computeWeblink(repo) {
    if (!repo.web_links) { return ''; }
    const webLinks = repo.web_links;
    return webLinks.length ? webLinks : null;
  }
}

customElements.define(GrRepoList.is, GrRepoList);
